Jang, H.
, Pernstich, K.
, Gundlach, D.
, Jurchescu, O.
and Richter, C.
(2012),
Observation of spin-valve effect in Alq3 using a low work function metal, Applied Physics Letters
(Accessed December 26, 2024)
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Observation of spin-valve effect in Alq3 using a low work function metal
Published
Author(s)
, , , Oana Jurchescu,
Abstract
We present the observation of magnetoresistance in Co/Ca/Alq3/Ca/NiFe spin-valve devices. Thin Ca layers contacting 150 nm thick Alq3 enable the injection of spin-polarized electrons into Alq3 due to engineering of the band alignment. The devices exhibit symmetric current-voltage (I-V) characteristics indicating identical metal contacts on Alq3 and up to 4% of positive magnetoresistance was observed at 4.5K. In contrast, simultaneously fabricated Co/Alq3/NiFe devices displayed asymmetric I-V curves due to the different metal electrodes, and spin-valve effects were not observed above noise level.Citation
Applied Physics Letters
Volume
101
Pub Type
Journals
Citation
Issues
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Created September 7, 2012, Updated February 19, 2017